对煤矿矿井水害防治措施的研究

在煤矿生产管理中,矿井水害是比较常见的病害。文章立足煤矿矿井实际,就矿井水害的类型与原因进行分析,在此基础上,提出了水害防治的有效措施,旨在与各位同仁探讨矿井水害防治技术,为煤矿生产安全有效地进行奠定坚实的基础。     

刊首语

正煤矿水害是影响煤矿安全生产的五大灾害之一,随着矿井开采深度的不断加大,矿井开采面临水压大、地质和采场环境复杂的难题,导致水害问题目益严重,因此,做好煤矿水害防治工作已成为矿井安全高效开采的首要任务。目前矿井水害防治的主要措施可归纳为"查、探、疏、排、堵、截"六个字。为了交流煤矿水害防治技术,本期刊登了多篇煤矿防治水方面的文章。在查明矿区水文地质条件、加强水害防治对策方面,《露头区综放工作面玄武岩含水     

浅析煤矿防治水工作主要存在的问题及对策措施

煤矿防治水工作是预防矿井水害发生的重要技术手段,但是多数煤矿企业由于受矿井地质条件、防治水技术水平等因素影响,致使矿井防治水工作不到位,造成煤矿水害频繁发生,严重影响煤矿安全生产。对此潞安集团司马煤业公司地测科通过分析研究,根据本矿实际情况阐述了矿井防治水工作主要存在的问题,并提出了几项合理化对策措施,力求保证煤矿安全生产。     

矿井水的主要类型及其防治措施

该文通过对实际经验的总结,分析了矿井水的主要类型及其特点,并针对不同的水害提出了相应的防治措施。笔者认为只要根据矿井水害的实际情况,然后采取相应的防治措施,矿井水灾害是可以消除的,从而实现煤矿的安全生产。     

矿井防治水工作研究

矿井水害是矿山建设与生产过程中的主要灾害之一,它给国家带来极大的经济损失与人身伤亡。煤矿生产企业应切实加强煤矿防治水工作,并紧抓不懈。文章主要研究矿井水害的类型及表现形式、矿井水文地质基础工作、矿井水害防治技术,以此来指导企业进行水害安全防治。     

煤矿水文地质特征及矿井水害防治措施

研究煤矿水文地质情况,合理防治矿井水害,有助于保证煤矿作业安全。本文结合实例分析煤矿水文地质,探讨矿井常见水害与防治措施,为煤矿安全生产提供经验借鉴与参考。     

偃龙煤田铁生沟煤矿水害特征及防治对策

通过对偃龙煤田区域和铁生沟矿井水文地质条件的分析,结合铁生沟矿和同一煤田内其它矿井水害情况,认为顶板砂岩水是当前铁生沟煤矿的主要水害,影响采煤工作面的正常生产,奥灰水和小窑老空水是威胁矿井安全生产的主要水害;分析了铁生沟煤矿当前水害防治中存在的主要问题,针对铁生沟矿不同水害类型和防治水工作中的问题,提出了矿井水害防治对策。     

沁城煤矿2号煤层充水条件和水害防治方法

根据沁城煤矿井田内及其周边矿井水文地质条件,提出了沁城煤矿矿井充水条件,并对沁城煤矿首采区2号煤层面临的主要水害顶板水提出了防治措施。     

煤矿采煤工作面水害防治方法探讨

针对一些矿井采煤工作面由于采取的防治水措施不当而发生水灾事故,以漳村煤矿2205采煤工作面水害防治方案为例,探讨了矿井采煤工作面水害防治方法,以确保矿井安全生产。     

煤炭工业出版社煤矿防治水手册

为了加强煤矿防治水基础工作,促进煤矿防治水工作规范化与标准化,国家煤矿安全监察局组织全国知名煤矿防治水专家,以《煤矿防治水规定》和《煤矿安全规程》(防治水部分)为依据编写了本书。书中主要内容包括:防治水基本知识,矿井充水条件分析,矿井水文地质类型划分,水文地质补充勘探,矿井涌水量计算方法,防治水规划,水害预测、预报,防治水的各种技术、方法和措施,水害应急救援,矿井水资源化与矿区水资源优化配置等。本书是从事煤矿防治水技术和管理人员的必备专业工具书。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。